WHO WE ARE

MJ Fit is a boutique gym exclusively for women and children in the Denver Tech Center area. We offer private training, small group classes, and nutrition counseling in a supportive, empowering, and non-threatening environment. We have small group classes of varying intensities to accommodate all ability levels, and private training that is individualized to ensure our clients reach their goals safely and efficiently.

We understand making a lifestyle change can be tough, but our goal is to make the journey as enjoyable as possible. Our trainers and coaches have high expectations, but we also understand there are obstacles along the way. With our team, there is no shortage of accountability–we are certain of that!

Now that you’re as excited as we are, it’s time to get your butt to the gym!

Meet Our Trainers

MJ JOHNSTON

Hi! My name is MJ! I grew up in a small farming community in Missouri. I never felt like I fit in, and at an early age, I realized I had dreams bigger than most of my peers. Once I finished high school, I stayed in Missouri to attend Stephens College as a Fashion Communications major with intent to become a fashion journalist. I quickly realized this wasn’t the path for me! A spontaneous early-life crisis lead me to Boston, MA where I spent three years discovering who I was and what I wanted to do. During my first year here, I struggled with body image, confidence, and direction, which caused me to develop the female athlete triad. It took another full-year for me to recover, and find my love for health and fitness. Once I started toward my B.S in Sports Management through California University of Pennsylvania, I knew fitness/nutrition was the industry for me. I also discovered powerlifting during this time, and I will attribute my strength, both mental and physical, primarily to all my heavy lifting! By the time I graduated college, I made the move from Boston to Denver to open a gym exclusively for women and children.
It was a whirlwind when I moved to Denver; the dream I had of opening my own gym seemed so far away, but within two years of moving, I made it happen! At this point, I have competed in five powerlifting meets, taking first place at all but one, and six bikini bodybuilding shows as a natural athlete. However, what I am the most proud of is my successful opening of MJ Fit in the Denver Tech Center! Every day I go into the gym (even if it’s 5am), I am grateful for all the incredible women and kiddos who have trusted us with their health, and for my trainers who work tirelessly to provide the same level of service and dedication to their clients as I do. I also have an adorable puppy, Stella, who is almost always at the gym with me to hold our clients accountable!

Why I’m a trainer: Once I found powerlifting, my entire life changed, and I made it my mission to help other women and children live healthier lives, allowing them to feel fulfilled too! At MJ Fit, our mission is “inspiring women and children to be strong,” and I love helping my clients find their “strong,” even when it is very different from my own. It is so rewarding to see a client reaching the goals we discussed months or years before in our consultation, and exciting to realize how our team work is paying off!

Why I train myself: I have a background with personal insecurities leading to multiple eating disorders, the female athlete triad, osteopenia, and brittle broken bones. I finally decided this was not the life I wanted to lead. Once I discovered powerlifting, I fell in love and have now competed in several meets, taking home 1st place in all of them. I love seeing myself grow stronger, healthier, and more confident with each time I finish a workout!

Favorite Exercise: Squats! All of them, but mostly barbell back squats, because of how strong they make me feel. Plus, I can usually beat the boys! Click here to watch a video to learn how to do this badass exercise!

Fun Fact: I love to travel. I have visited 12 countries so far, and am always planning my next adventure! If you need help with travel resources, I am your girl! Just make sure to bring me back a magnet!

OPERATING HOURS :
Monday to Friday : 5am-8pm
Saturday and Sunday : 8am-1pm
Closed On Public Holidays
ADDRESS:
6858 South Yosemite Street, Centennial, CO 80112
(Inside Southgate Shopping Center)
TELEPHONE:
EMAIL:
TERRI ROSS

Hello! My name is Terri! I was born in Texas but raised in Denver, Colorado. I have been a cancer survivor since 2016, and through my journey toward recovery, I realized the power of exercise and self-care. Through all my treatments and appointments, I realized how much I missed feeling STRONG, so I made the commitment to myself to get all this back once I beat cancer. I started looking forward to empowering women to conquer the mind game of life through fitness. Now that I have gotten all the necessary certifications and training to be an MJ Fit personal trainer, I am eager to share my love of fitness and exercise with those around me. When I am not working or at the gym myself, I enjoy time hanging out with my Triathlon team, and family! I also enjoy physical challenges such as mud-runs, triathlon, and long bike rides. I live in Littleton with my husband and I have an 18 year old daughter who is attending CSU in Fort Collins!

Why I’m a trainer: I became a personal trainer because I noticed how quickly I could flip the script of a bad day by simply walking into the gym. I want to help women get confident in the gym so they can do the same.

Why I train myself: I train because it makes me feel confident. I love to make a goal and crush it. I also train because, when doing so, I am actively fighting cancer.

Favorite Exercise: If I can be outside I love to ride my bike. Otherwise, I like plyo drills such as box jumps and slam balls. Click here to watch a video to learn how to do box jumps!

Fun Fact: I’ve been skydiving but am afraid of bungee jumping.

  • ACE Certified Personal Trainer
  • Cancer Exercise Specialist
OPERATING HOURS :
Monday to Friday : 5am-8pm
Saturday and Sunday : 8am-1pm
Closed On Public Holidays
ADDRESS:
6858 South Yosemite Street, Centennial, CO 80112
(Inside Southgate Shopping Center)
TELEPHONE:
EMAIL:
RACHEL HORWITZ—YOGA INSTRUCTOR

Hello! I am Rachel! I was born and raised in St. Louis Missouri but I moved to Denver a little over a year ago. Growing up I was always very active. Participating in many different sports/activities over the years. I discovered yoga as an adult and quickly fell in love with it. My personal journey began about five years ago when I started attending classes regularly. As I became more committed to my practice I began to experience the many benefits of yoga, both physical and mental.

I graduated from Axis yoga here in Denver in December of 2018 with my 200 hour yoga teacher training and have been enjoying teaching ever since. I am very committed to sharing my passion of yoga with others so that more people can benefit, heal, and feel confident in themselves. I am so happy to be apart of such an empowering group of women here at MJ Fit!

Fun Fact: I love to teach and practice many different styles of yoga but my two favorites are Vinyasa Flow for strength & flexibility also Restorative yoga for deep stretching & relaxation!

OPERATING HOURS :
Monday to Friday : 5am-8pm
Saturday and Sunday : 8am-1pm
Closed On Public Holidays
ADDRESS:
6858 South Yosemite Street, Centennial, CO 80112
(Inside Southgate Shopping Center)
TELEPHONE:
EMAIL:
JESSICA DALTON—YOGA INSTRUCTOR

Hi there! My name is Jessica. I got my 200 hour yoga teaching license in Rishikesh, India. My classes will usually be in the style of ashtanga vinyasa, hatha, or a restorative class. Expect an all levels type class, with modifications if needed. Sometimes I like to include different pranayama, or breathing techniques, mantra chanting, meditations and essential oils. So come with an open mind and be ready to flow. 🙂 My diet and nutrition are very important to me. I live a mostly plant based diet, so finding new nutrition options and creative meals is something I am always looking out for! I am so excited to be a part of the MJ Fit family, and I’m looking forward to meeting more of the community!

OPERATING HOURS :
Monday to Friday : 5am-8pm
Saturday and Sunday : 8am-1pm
Closed On Public Holidays
ADDRESS:
6858 South Yosemite Street, Centennial, CO 80112
(Inside Southgate Shopping Center)
TELEPHONE:
EMAIL:
ANGELA KARNER—BARRE INSTRUCTOR

Hello! I am Angela and my family and I moved to Highlands Ranch, CO in April 2018 from Long Beach, CA. I have always been an athlete and I fell in love with barre when I took my very first class. I was 3 months post partum after having my first child and was looking for an effective yet low-impact workout to reawaken my muscles and increase my flexibility and strength. I completed my instructor training and certification a year later during my second pregnancy. I am certified by The London Method and I teach the ORIGINAL Lotte Berk Method which was created in England in the 1930’s and passed down, unchanged. I am excited to bring this method to CO and I am the only barre instructor in the state of CO certified to teach this one-of-a-kind workout. I love the way this unique combination of modern ballet, yoga, and physical therapy lengthens and strengthens. Consistent practice enhances the female body’s feminine shape by pulling in the waistline and thighs as well as improving posture. I have practiced and am experienced teaching with modifications for pregnancy and post natal modifications as well as injury modifications to rehabilitate. I am so happy to be teaching at MJ Fit and to be a part of this exciting community of strong, positive females and children.

OPERATING HOURS :
Monday to Friday : 5am-8pm
Saturday and Sunday : 8am-1pm
Closed On Public Holidays
ADDRESS:
6858 South Yosemite Street, Centennial, CO 80112
(Inside Southgate Shopping Center)
TELEPHONE:
EMAIL:
ALEXA GRILLO—YOGA INSTRUCTOR

Hi! My name is Alexa (insert Amazon Alexa joke). I was born in Los Angeles, CA and raised in Denver, CO, which is how I came on board at MJ Fit! I recently moved back to Los Angeles where I received my 200-hour yoga certification. I am teaching virtual Vinyasa yoga and weighted power yoga classes at MJ Fit, and am grateful for all the awesome ladies I get to work with all over the country through these virtual classes!

My yoga practice began a few years ago and it changed my life. I was struggling with anxiety and depression and used yoga as my medicine to help improve my mental health. I am passionate about helping other people cope with their mental health issues and create my flows to bring the mind and body into equilibrium. In my classes, my goal is to help you connect your mind-body-spirit on a deeper level by synchronizing breath with movements to help strengthen your mental health. I encourage all to find their true selves in a positive and uplifting way!

OPERATING HOURS :
Monday to Friday : 5am-8pm
Saturday and Sunday : 8am-1pm
Closed On Public Holidays
ADDRESS:
6858 South Yosemite Street, Centennial, CO 80112
(Inside Southgate Shopping Center)
TELEPHONE:
EMAIL: